摘要
报道了用超声波降解模拟废水中低浓度乐果的试验。探讨了超声波辐射时间、外加 H2 O2 、溶液中乐果的初始浓度、溶液温度等因素对乐果降解效果的影响。试验表明 ,辐射时间延长 ,降解率增加 ,辐射 1 2 0 min后降解率达 97.5% ;加入浓度为 1 .2 7mg/ ml的 H2 O2即可明显提高乐果的降解率 ,H2 O2 的添加量达 2 .44mg/ ml后 ,降解率增加趋缓 ;乐果溶液初始浓度由 0 .0 8mg/ ml增加到 1 .6mg/ ml,降解率由 87.5%降低到 55% ;溶液温度控制在 30℃以下对超声降解有利。
A test for decomposing low concentration Dimethoate in simulated wastewater by ultrasonic wave was introduced.The effect of irradiation time,dosages of H 2O 2,initial concentration of Dimethoate and temperature on decomposition were explored.The results show that the longer irradiation time is,H 2O 2;in the lower concentration range of Dimethoate solution,the degradation efficiency is enhancing with the increase of concentration;and the suitable temperature for degradation is under 30℃.
出处
《重庆环境科学》
北大核心
2003年第12期27-29,共3页
Chongqing Environmental Science
关键词
乐果
超声波
降解
Dimethoate
ultrasonic wave
degradation
